US Bridges

LA0858 over Hurricane Slough

Good

Franklin Parish, Louisiana · 0.70 M E of LA 859 · Structure no. 582108210201001

Built
1997
28 years old
Condition
Good
inspected February 2024
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
196
2021 count
Owner
State
State Highway Agency

About this bridge

LA0858 over Hurricane Slough is a concrete slab carrying LA0858 over Hurricane Slough in Franklin Parish, Louisiana. It was built in 1997, so it is 28 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 196 vehicles a day, roughly 11% of them trucks, projected to reach 215 by 2041. The structure is 57 ft (17.4 m) long and 32 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesLA0858
CrossesHurricane Slough
Location0.70 M E of LA 859
RouteState Highway 858
Coordinates32.33352, -91.5401
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating64 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic196 (2021)
Projected traffic215 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0858 over Hurricane Slough built?

It was built in 1997, making it 28 years old in 2025.

What condition is LA0858 over Hurricane Slough in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.

How much traffic does LA0858 over Hurricane Slough carry?

About 196 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0858 over Hurricane Slough?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 32 ft wide.

Who owns LA0858 over Hurricane Slough?

It is owned by the State Highway Agency.